TWE_AEN_Q_LENGTH
next = (sc->sc_aen_head + 1) % TWE_AEN_Q_LENGTH;
nextnext = (sc->sc_aen_head + 2) % TWE_AEN_Q_LENGTH;
sc->sc_aen_tail = (sc->sc_aen_tail + 1) % TWE_AEN_Q_LENGTH;
uint16_t sc_aen_queue[TWE_AEN_Q_LENGTH];